Instruction manual

SM425 INSTRUCTION MANUAL 7.0 STARTUP
m = Air ratio
X = Fuel coefficient, Nm3/kg or m3/m3
For details on each parameter, refer to Section 1.50.3, “Fuel Settings.”
7.10 Checking the Current Loops
A programmed test current is sent to the analog output.
1. Press the Setup key on the basic panel display to display the Execution/Setup display. Then
select Maintenance in the Execution/Setup display screen.
2. Select “mA-output loop check” in the Maintenance panel display screen to display the “mA-output
loop check” display. Select the desired analog output. See Figure 7-18.
3. A default value of 4 mA is generated when the numeric-data entry display appears. Enter a value
to generate other currents, for example 20 mA.
Figure 7-18 “mA-output loop check” Panel Display
7.11 Testing Contact I/O
7.11.1 Testing Output Contacts
To check an output contact, follow these steps:
1. Press the Setup key in the basic panel display screen to display the Execution/Setup display
screen. Select Maintenance in that display screen.
2. Select “Contact check” in the Maintenance panel display screen then “contact output”. The Output
contacts display then appears (see Figure 7-19).
3. Select the desired output contact. A display appears for controlling the contact state. Use this
display to conduct continuity checking.
Figure 7-19 Output Contact Check Panel Display
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